Fshnwmn,
Last year I hand pumped 90 gallons of bad gas from my auxillary tank. I borrowed one of those 1 1/2 gallon oil/exchange pumps. I also purchased a fuel funnel to help siphon any water pulled out of the tank. I put the tainted gas in 5 gallon containers and burned it in all of my families cars at 5 gallons per week. The cars burned the gas great, Yamaha's not so much. Either way it is a crap job and takes forever depending how much gas is in your tank. I siphoned it out through the sending unit under the deck plate. Buy a piece of steel fuel line so you are sure you get to the bottom of the tank. Mine was a 150 gallon tank. Good luck.
John